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Texas Instruments SN74LVC1G34DCKRE4
- Part No.:
- SN74LVC1G34DCKRE4
- Manufacturer:
- Texas Instruments
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
SN74LVC1G34DCKRE4.pdf
- Description:
- IC BUF NON-INVERT 5.5V SC70-5
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
SN74LVC1G34 from Texas Instruments is a single non-inverting CMOS buffer gate designed for 1.65V to 5.5V VCC operation, performing Y = A logic with 3.5ns max propagation delay at 3.3V, ±24mA output drive, and Ioff support for live insertion-used in portable audio interfaces, SSD control paths, and embedded PC signal buffering.
For engineers reviewing the SN74LVC1G34 datasheet, SN74LVC1G34 pinout, SN74LVC1G34 application, or SN74LVC1G34 equivalent, key selection criteria include its 5-pin SC70 (DCK) package, 1.65–5.5V supply range, 3.5ns tpd at 3.3V/15pF, Ioff capability for partial power-down, and 5.5V-tolerant inputs enabling level translation in mixed-voltage systems.
Technical Context
This device implements a single positive-logic buffer (Y = A) using advanced LVC CMOS process technology, delivering rail-to-rail output swing and high noise immunity across its full 1.65–5.5V VCC range. Its Ioff circuitry actively disables outputs during power-down, preventing back-drive current and enabling hot-plug compatibility.
Input voltage tolerance up to 5.5V allows interfacing with legacy 5V logic while operating from 1.8V or 3.3V supplies-a critical feature for voltage translation in portable media devices and SSD controller I/O expansion. The SC70-5 (DCK) package provides 2.0mm × 2.1mm body size with 0.65mm pitch, optimized for space-constrained PCB layouts.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| VCC Range | 1.65V to 5.5V - supports direct interface with 1.8V, 2.5V, 3.3V, and 5V logic domains |
| tpd (max) | 3.5ns at VCC = 3.3V, CL = 15pF - enables reliable operation up to ~100MHz clock/data rates |
| IOH/IOL | ±24mA at VCC = 3.3V - sufficient to drive multiple CMOS inputs or low-current LEDs directly |
| Ioff | <±10μA at VCC = 0V - prevents back-current flow during partial power-down or hot-swap |
| Input Voltage Range | –0.5V to 5.5V - 5.5V-tolerant inputs allow safe connection to 5V signals even when VCC = 1.8V |
| ICC (max) | 10μA at TA = 85°C - ultra-low static power ideal for battery-powered portable electronics |
| Ci | 3.5pF at VCC = 3.3V - low input capacitance minimizes loading on driving stage and preserves signal integrity |
Pinout & Package
The SN74LVC1G34DCKRE4 is packaged in a 5-pin SC70 (DCK) surface-mount package with 2.0mm × 2.1mm body size, 0.65mm pin pitch, and standard pin 1 marking. Thermal resistance RθJA = 371.0°C/W enables operation in compact, thermally constrained designs without forced airflow.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | No internal connection (N.C.) | Unused pad; must be left floating or grounded per layout best practice-no electrical function |
| 2 | Input (A) | CMOS-compatible digital input accepting –0.5V to 5.5V; no external pull required if driven |
| 3 | Ground (GND) | Primary return path for all output sink current and supply return; requires low-impedance PCB plane |
| 4 | Output (Y) | Push-pull CMOS output capable of ±24mA drive; compatible with 15pF load for full-speed spec compliance |
| 5 | Supply (VCC) | Single power rail (1.65–5.5V); requires local 0.1μF ceramic decoupling capacitor placed adjacent to pin |
Key Features
| Feature | Design Value |
|---|---|
| 5.5V-tolerant inputs | Enables seamless level translation from 5V controllers to 1.8V/3.3V subsystems without external resistors or translators |
| Ioff protection | Prevents damaging current flow during power sequencing mismatches-critical for SSD and docking station hot-plug reliability |
| Ultra-low ICC | 1μA typical / 10μA max ICC ensures minimal battery drain in always-on portable audio and PDA applications |
| High-speed tpd | 3.5ns max at 3.3V allows clean signal buffering in HDMI auxiliary channels, USB enumeration lines, and PCIe reset distribution |
| ESD robustness | 2kV HBM / 1kV CDM rating meets industrial-grade handling requirements without additional protection circuitry |
Applications
| Audio Dock Interface | SSD Controller Signal Buffering |
|---|---|
Use Scenario: Level-shifting and buffering I²C/SPI control signals between a 5V host dock MCU and 3.3V portable audio codec IC. IC Role / Device Role / Timing Role: Non-inverting buffer providing 5.5V-tolerant input and 3.3V-rail output to isolate voltage domains while preserving timing integrity. Use Value: Eliminates need for discrete level translators; maintains <3.5ns propagation delay to meet I²C fast-mode-plus timing budgets. | Use Scenario: Driving enable/reset signals from an SSD controller to NAND flash packages operating at different VCC levels. IC Role / Device Role / Timing Role: Single-gate buffer ensuring clean, high-drive signal edge delivery to multiple flash die with minimal skew. Use Value: ±24mA drive sustains signal integrity across PCB traces to 4+ NAND packages; Ioff prevents backfeed during partial SSD power-down. |
| Embedded PC GPIO Expansion | Wireless Peripheral Control Logic |
Use Scenario: Extending low-current GPIOs from an SoC to drive higher-capacitance loads such as LED indicators or small solenoids in industrial HMIs. IC Role / Device Role / Timing Role: Output buffer amplifying weak SoC GPIO drive strength while maintaining logic-level compatibility. Use Value: 24mA sink/source capability replaces discrete transistor stages; 3.5ns tpd ensures real-time response in button debounce and status feedback loops. | Use Scenario: Isolating and conditioning wake-up signals between Bluetooth LE SoC and peripheral sensors in wireless headsets and mice. IC Role / Device Role / Timing Role: Low-power buffer enabling reliable signal transmission across noisy RF environments with minimal added latency. Use Value: 10μA max ICC extends battery life; ESD-hardened I/O withstands repeated human-handling events without degradation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buffer gate applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| 74LVC1G17GW,125 | Schmitt-trigger input (hysteresis), same 5-pin SC70 package and 1.65–5.5V range; tpd = 4.2ns max at 3.3V | Better noise immunity in electrically noisy environments (e.g., motor-driven peripherals); not suitable for clean clock/data buffering where waveform fidelity is critical | Select 74LVC1G17GW,125 only when input signal edges are slow or noisy; SN74LVC1G34 remains preferred for precise timing paths. |
| NC7SZ17P5X | Same Schmitt-trigger function, SOT-353 (SC70-5) package, 1.65–5.5V; tpd = 4.5ns max at 3.3V; lower ESD rating (1.5kV HBM) | Compatible footprint but lacks Ioff support-unsuitable for hot-plug or partial power-down use cases like docking stations | NC7SZ17P5X may reduce BOM cost in non-hot-swap consumer applications, but SN74LVC1G34 is required where Ioff or 2kV HBM is mandated. |
Compared with 74LVC1G17GW,125 and NC7SZ17P5X, the SN74LVC1G34DCKRE4 uniquely combines non-inverting buffering with Ioff, 2kV HBM ESD, and 3.5ns speed-making it the only choice for timing-critical, hot-pluggable, and mixed-voltage embedded control paths.
Availability
SN74LVC1G34DCKRE4 is available at Aetrix Electronics and suitable for portable audio docks, SSD controller interfaces, embedded PC GPIO expansion, and wireless peripheral control requiring stable component supply across industrial and consumer production cycles.
Supply support for SN74LVC1G34DCKRE4 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Texas Instruments is a global semiconductor leader specializing in analog, embedded processing, and logic solutions, with over 50 years of innovation in high-reliability, low-power IC design.
The SN74LVC1G34 belongs to TI's LVC (Low-Voltage CMOS) logic family, engineered specifically for voltage translation, signal buffering, and I/O expansion in space- and power-constrained portable and embedded systems.
FAQ
What is the maximum operating temperature for the SN74LVC1G34DCKRE4?
The SN74LVC1G34DCKRE4 supports an operating free-air temperature range of –40°C to 125°C for all packages except DSBGA variants, which are rated to 85°C. This 125°C rating applies directly to the DCK (SC70-5) package used in SN74LVC1G34DCKRE4, enabling deployment in thermally demanding embedded PC and SSD controller environments without derating.
Does the SN74LVC1G34DCKRE4 support level translation between 5V and 3.3V logic domains?
Yes, the SN74LVC1G34DCKRE4 supports bidirectional level translation: its inputs tolerate up to 5.5V regardless of VCC, allowing 5V signals to safely drive the A input while VCC = 3.3V; the Y output swings rail-to-rail between GND and VCC, producing a clean 3.3V logic signal. This eliminates external translators in mixed-voltage audio dock and SSD applications.
Can the SN74LVC1G34DCKRE4 drive an LED directly?
Yes, the SN74LVC1G34DCKRE4 can drive an LED directly when configured as a low-side switch: connect the LED anode to VCC and cathode to Y, enabling up to 24mA sink current at VCC = 3.3V. For high-side drive, pair with a P-channel MOSFET or use the buffer to drive a discrete NPN transistor-TI confirms this usage in Application Note SCES519O Section 8.1.
What is the purpose of the no-connect (N.C.) pin on the SN74LVC1G34DCKRE4?
The Pin 1 N.C. on the SN74LVC1G34DCKRE4 has no internal connection and serves solely as a mechanical alignment aid and thermal relief pad. It must be left unconnected (floating) or tied to GND per PCB layout best practices-but never connected to VCC or driven, as it carries no electrical function and is not ESD-protected.
How does the Ioff feature benefit system design with the SN74LVC1G34DCKRE4?
The Ioff feature in the SN74LVC1G34DCKRE4 disables output drivers when VCC = 0V, limiting leakage current to <±10μA. This prevents back-driving of powered-down sections-critical in portable audio docks where USB host power may remain active while the dock's main rail is off, avoiding latch-up and ensuring safe hot-insertion per JESD78 Class II compliance.
SN74LVC1G34DCKRE4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- 74LVC
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Logic Type:
- Buffer, Non-Inverting
- Number of Elements:
- 1
- Number of Bits per Element:
- 1
- Input Type:
- -
- Output Type:
- Push-Pull
- Current - Output High, Low:
- 32mA, 32mA
- Voltage - Supply:
- 1.65V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SC-70-5
SN74LVC1G34DCKRE4 FAQ
1.How can I place an order for SN74LVC1G34DCKRE4 through Aetrix?
Please submit a Request for Quotation (RFQ) for SN74LVC1G34DCKRE4 on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for SN74LVC1G34DCKRE4 reliable?
The price and inventory of SN74LVC1G34DCKRE4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for SN74LVC1G34DCKRE4 is usually 5 days.
3.What payment methods are accepted for SN74LVC1G34DCKRE4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for SN74LVC1G34DCKRE4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for SN74LVC1G34DCKRE4?
SN74LVC1G34DCKRE4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your SN74LVC1G34DCKRE4 order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for SN74LVC1G34DCKRE4?
For technical support, including SN74LVC1G34DCKRE4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your SN74LVC1G34DCKRE4 requirements.
6.How does Aetrix verify that SN74LVC1G34DCKRE4 is sourced from the original manufacturer or authorized distributors?
All SN74LVC1G34DCKRE4 products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that SN74LVC1G34DCKRE4 meets industry standards.
7.What is the process for return or replacement of SN74LVC1G34DCKRE4?
All SN74LVC1G34DCKRE4 units undergo pre-shipment inspection (PSI). If there is an issue with SN74LVC1G34DCKRE4, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The SN74LVC1G34DCKRE4 part is unused and in its original packaging.
Return procedure for SN74LVC1G34DCKRE4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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